Sander nozzle



July 7, 1925.

D. o. sNooK l SANDER NOZZLE Filed Feb. 16. 1924 l To all whom 1f may concern.'

Patented July 7, 1.925.

UNITED STATES- DANIEL o. sNooK, `or KANsAs crm,- KANsAs. t

v p. g r sANnEn'NoZzLE.;

. 3 Appneationmammary 15,1924. sefiailiiaesazze.

The present invention,v relates to track v sanding devices, and aims toprovide a novel and improved device o-f this character in which the proper fiow of the sand is facilitated, the invention having particular reference to sander nozzles ingwhich the flow of the sand is induced by a compressed air 'connection. f

A further feature of the invention is the provision of a compressed air connection including a nozzle device the construction o'f which is adapted to prevent any clogging of the air passage with any foreign particles, and in which means are" provided forthe trapping of any such waste or foreign matter Within a chamber from which such matter may be removed from time to time.

It is also sought lto provide a construction adapted for connection to. the sand feeding conduit by either a direct 'horizontal arrangement, or in such a relation as requires an angular assembly of the parts comprising the nozzle attachment.

lith this general object in view, the in- `vention will now be described'with reference 'to the accompanying drawing illustrating two different forms of embodiment of the improvement, after which those features deemed to be novel will be particularly set forth andl claimed.

. In thedra-vving-v u.

Y with the present invention;

Figure 2 is an elevation, on a reduced scale, showing the device attached to a sand feeding conduit, with a part of the sand supply box included in the view; and

Figure 3 is a sectional view, partly in side elevation illustrating a modified form of arrangement of the device in relation to the sand feeding pipe.

Referring now' to the drawing in detail, and more particularly to Figures 1 and 2, this illustrates the improved device in its operative relation to a sand feeding pipe L1 leading from a sand box 5, and connecting with a sand delivery pipe 6 through the medium of a four-way cross or union joint 7 4fitte-d with therusualcleanout'plug At a point opposite to the connection of the union 7 with the pipe 6, there is threaded into said union 'fthe discharge endof the nozzle member 9 forming a part of myiinproved device, anddesigned for conducting air into.

the path of flow of sand through the sand conduit,vas illustrated in Figure 1. The discharge endl of the lmember 9 Iprojects sufficiently within the interior chamber 1()l of theunion 7, for the purpose of intersecting y the path of sand flow, andthis extremity of the member 9` is suitably cut away and rounded off, as indicated at 11., for the purpose of avoiding any tendency of this part of said member to obstruct the flow rof. sand or clog up the passage 10, as might foccur if angular or fiat surfaces were presented to the flow of sand at this point.

In' the constructionillustrated in Figures 1 and 2, the nozzle member 9 isbent at right angles1 as indicatedr'at l2, and thereceiving end Yof this member 9 is fitted with a tubular element ,14, suitably threaded, vasrindicated at 15, for attachment to the receiving end of said member .9. To this end of the `member 9 is also clamped alcasing element 16 having an interior flange 17r fitting the element 14, andformed with a ground surface for tight fitting relation .with the member 9 around the marginofsaid element 14, in which relation the parts are clamped by la collar 18 engaging an exterior flange 19 on the casing 16 and having an interior thread for attachment tothe outer margin of the receiving end of saidv member 9. ,The hollow interior of' the lcasing 16l is of greater diameter thanthe element 1&1,A as clearly illustrated Vin Figurev l, thus forminga trap `chamber 2O for the collection offfany waste or foreign particlesv which; maybe caught withinthis' chamber ya'swth'e airv flo-ws'therew into from a suitable compressed air connection 21 and thence through the air passages 22 and 23 in the element 141 and nozzle member 9, respectively.

One of the novel features of the improved construction, in this connection, is the tapering of the air passage 22, throughout its length, beginning with the receiving end of said passage in the chamber 2O and gradually increasing in diameter toward the other end of said passage which communicates with the passage 23 through the nozzle member; and, preferably, this latter passage 23 is also of a gradually increasing diameter llt) from fits :pointe-f eommunieation with ythe passagezyto `the discharge end of said passage Within the chamber 10 Where Yit vmeets with the flow of sand :through vthe union yor joi nt 7.

there the connection of the air-line 21 is t0 be made to the sand feeding conduit by a straight horizontal connection, 'Without any bend in the air line at the nozzle, 'I employ vthe construction illustrated in LAliguref. :In this arrangement, the angular nozzle member '9 is not required, but simply 'a straight sleeve member 25, mounted by means of a bushing 26m one of the openingsof theunion Tfthe'diseharge end of said sleeve 25 being `rounded or tapered off, as illustrated at 25. This sleeve 25 is Aconnected 'tothe casing 16 by means Vof a joint element 27* similar vto the receiving end of the nozzle member 9, anclprovide'd with a socket portion 28 .for receiving one end of the sleeve 25. The element 27 is secured to the casing 16 through the medium of the collar "f8, in the Asame Imanner as the vnozzle member 9., as illustrated in Figure l.

llt -W'ill'thus lbe seen :that have provided a simple'and practical device for carrying out the objects of *the invention. @n account of thefgradually Aincreasing,size of Athe Aair passage' 22, in lthe direction -o'f flow of the VAair therethrough, there is yno opportunity Vafforded -for Uthe packing of any 'foreign particles in said passage, since the r increasing size of `the passage simply per mits :the: loosening up of such mattei', and entire freedom of fmovement throughthe passage vinto the sand chamber l0. When 'thel flow of air enters 7the trap chamber 20, 'which is -in communication with lthe point of smallest diameter `of the 'air1 passage through the nozzle, the usual -aetion at this point v1vill be `the prevention ofany Waste -or foreign rpart les vfrom enteringintotlre rpassage22, thus Vvtrapping such foreign mat- 'ter-in the chamber '20, from which it may fbe removed from time to vvtime, l"'by simply 'loosening ithe collar 18, when the 1tubular element 114e VAmay vbe removed for cleaning both it'and the interior of the casing 16. Another important advantage of the impro-ved"Construction is the provision of 4the itapered or rounded eontounat'the 'discharge end of the nozzle member 9, or the sleeve 'menrl-)er 25, Which as above explained pre-V vents Vany clogging :in the chamber l() by presenting no surface to the flow of sand which would have any tendency to obstruct the free flow thereof.

lVhile I have illustrated what I now regard as the preferred form of construction for embodying-the proposed improvements,

`'Ifdesire to reserve the right to make sueh changes as vmay fairly fall Within the scope offthe appended claims.

1lWhat I claim is '1. A sandernozzle comprising, in eombination lwith the sand feeding pipe, an attachmentformed with Yan air passage ar- 'angedto discharge into said pipe, `the major lportionof said airpassage being of gradually increasing diameter inthe direction of the discharge end of -said passage.

2. A `sander nozzlereomprising, in combination with the sand feeding pipe, an attachment formed With an air passage arvranged to discharge into said pipe, a polL "gradually increasing (diameter throughout .its flength 'und eonnuunieating Wim said Asand' .pipe atthe pointiof greatestdiameter -of Saad' passage.

Ll, A sander nozzle veompjieing -a casing adapted for attachment to ltheeompressedair line, :a noznleelement attached lto the discharge :end o'tsa-id-casing,land tubular Ielementof `smaller sine than the interior of fsaid casing.and ,providing communication 4between it rand safid lnozzle element, said tubular element terminating short -of the inlet end of said easing and' having a bore -gnadually ,increasing in .diameter in the diyreetion vof said nozzlevelement i IDANIEL O. 'SNQQK 

